Conveyer



Nov. 3 1931. T. G. NYBORG 1,830,557

CONVEYER Filed March 6, 1930 INVENTOR 6 M50496 ATTORNEY Patented Nov. 3, 1 931 UNITED STATES- PA E mens? TAGE GEORG 'NYZBORG, or MECO wonxs, WORCESTER, ENGLANQuASSIGNOR! or one- HALF 'roMA K FREDERICK HIGGINS, or WORCESTER-,ENGLAND ooivvnvnn Application filed March 6, 1930, Serial No. 438,758, and in Great Britain April 4', 1929. i v

The usual method of supporting the different sections of the troughing of a jigger conveyer employing shifting rollers has the disadvantage that it is diflicult to prevent the coal lying on the floor from accumulating round the rollers and so preventing them from working satisfactorily. Further, it is diificult to prevent the rollers from grinding into dust the coal falling on to the roller 19 path.

Also, if rollers on a common spindle are used, a large amount of unnecessary friction is produced if the spindle of the rollers is not in an exact position relatively to the trough or un-derframe, which requirement it is practically impossible to ensure below ground at the coal face.

The object of this invention is to provide in jigging conveyers a much lighter and cheaper top and underframe which will be free from the above objections.

According to the invention the troughing is supported on pairs of rollers, of the type 1 provided with shafts running on tracks, ax-

ially aligned and separately mounted in such a manner that they cannot fall off the underframe, but may be moved about with the underframe as a complete unit. The rollers have a sufficient amount of clearance between i the tracks on which their shafts run to permit a large amount of out of alignment between the underframe and the trough.

The trough is mounted on a bearer or top frame which extends over both rollers and has laterally extending wings projecting beyond the width of the underfram'e, and adapted to prevent coal or other material from falling on to the roller paths. It is further provided with forwardly and rearwardly extending stops to prevent the underframe moving out of position. Conveniently, the bearer may be constructed from a steel plate or a pair of steel plates in which lateral extensions or side wings are bent downwardly, and the front and back stops on both sides of the bearer are formed by downward bends, the troughing resting on the plate through the intermediary of one or more packing strips which may be formed integrally with supporting brackets for tlie walls of the troughingi The means for preventing separation of the rollers from the bottom frame may-comprise one or more flanged plates adapted to be bolted'in position after the rollers are set up and having an end overhanging the axle of the roller, but obviously any other suitable or convenient means may be employed;

The invention is illustrated in the accompanying drawings in-which Figure 1 illustrates a side View, and f V Figure 2 an end view.

Turning nowto the drawings the under frame comprises a bed frame formed of two transversely arranged angle plates 1,2," supporting longitudinally arranged angle plates 8, 4:, the latter providing a track for one-end of the shaft 5 of each of the rollers 6 The inner track for the shaft 5 ,of the roller-is formed by a second'plate 7 extending'between the plates 1, 2, the plates 7 being preferably bent: upwardly, asillustrated at 8, after the roller has been set up in position to prevent its separation by axial movement inwardly.

The bearer or top frameis' formed of'a pair of steel plates 9, 10, having lateral extensions or side wings 9a, 10a, defiected downwardly and extending over the 'irollertracks so as to protect them from dust falling from the conveyer. 'The plates 9, '10, arealso bent downwardly at'their ends as shown at 96,961., Figure 1, to form arcuate shoulders adapted to co-o-perate with therollers 6 to prevent dislodgment ofthe'underframe, 11 ismounted on the bearer plates 9, 10', through the intermediary of transverse bars 12,0119 ofwhich has its" ends 13, 14,'bent upwar'dly to provide supports for the sides of theltrough 11." Obviously the bearer frame could be constructed of a single shaped steel plateif desired, but thefconstruction illus: trated where itpossessesthe necessary rigidity makes for lightness, The clearance permitted to the rollers 6.both as regards endwiseimovement andtilt in a horizontal plane is made fairly substantial to accommo date a certain amount of out ofalignmentf when setting up. the underframe.

In the form shown it"will be appreciated that the rollers are finally prevented from accident-al separation by the inner plates 8 on the one part and the downwardly extending flanges 9a, 10a on the other part.v

The complete frame with the transverse bars 12 can be readily made andset up, and when once" assembledvas 'a'complete. unit requires no further dismantling in case the conveyer has to be taken down. g

The oon'structi'oniis. light. and, as Will/be readily realized, provides sufiicient strength for ordinary usage.

I claim 1. In a supporting underframe for a jigging or shakingconveyer, a pair of'axially aligned loose. rollers having axial shafts, tracks on which the shafts are supported @and the rollers held thereby free from. a supportinghsur'face, and a topframe supportedon sa1d. rol-lers,-said.topframe having Wings to extend aboveandbeyond the. paths of said rollerseand cover said tracks.

2.111 a supportingunderframe for ajigging or shaking coliveyenav pair of axially aligned loose rollers having axial shafts, tracks on which theshafts' aresu-pported and the rollers. held thereby free from a support ing surface, and a top framesupported on said. rollers, said top. frame; including a a steel plate extended laterallyte cover the roller paths-and extended downwardly at g the ends to provide-stops forthe rollers. v

3.111. a supportingamderframe for. a jig: ging orshaker conveyer, twopairs 1 of. tracks, apair of axially aligned, separately-mounted rollers having shafts running on said tracks to holdithe rollers free of a; supporting surface, and a bearer or. top frame resting on said rollers including aupair of steel plates extended laterally to protect the. roller paths against dust and-bent'downward fore and aft to provide stops. I y r s V 4; Ina-supporting underframe forajigginglor shaker conveyer, two. pairs of tracks, a pair. of" axially aligned, separately. mounted rollers'h aving shafts running on said tracks to-holdthe rollers free. of asupporting surface, and azbearer ortop frame restingfon said rollers including. .apair of: steel plates extendedklaterally. to protect the roller paths againstdust and bent downward-fore and aft to provide stops, .oneof. each of said-tracks comprising; a plate. with .-a bent upside to prevent axial. dislodgement of said rollers.

5. Ina supportingunderframe for a.-jig ging or shaker. conveyer, apairaof support mg. angle bars, asecondpair of. angle bars transversely mounted thereon, asecond pair oftrans-verse bars in spaced relation to said first'pair, said transverse bars-forming pairs of tracks, and axially aligned and separately mounted rollers. located. between said .tracks and having. shafts running thereon, said shafts supporting therollers free of a hearing surface, a .bearerframeiha-ving laterally extending wings supported on said rollers, saldbearer frame supporting the conveyer trough.

6. In a supporting underframe for a jigglng or shaker conveyer, two pairs of tracks,

a pair of axially aligned, separately mounted rollers having shafts-running on saidi'tracks to hold therollers free of bearing contact, a bearer or top frame resting on said rollers, transverse strips resting. onsaid top frame to support a trough, one-*of sa-id'strips having brackets, said top frame having wings adapted to extend over and beyond the said tracks, said; wings having downwardly bent,ilateral portions and means'to preveiits'aid rollers from becoming detached. v

I In testimony whereof I affix my signature.

TAGE GEORG NYBORG.

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